Hi
First post here for me.
I tried to do some tests on edge looping yesterday. It started with just some flat planes around the eyes and mouth, just to get the general feel for it. I never intended to make any model out of it, but as I messed around with it, I suddenly realised I had made a head. Not a very good one, but still a decent base for improvement.
Today I worked some more on it, fixing some loops and trying to make it more real looking. The nose was a pain, but I think it’s decent atm. The entire mesh should consist only of quads.
Due to that I was just going to do some quick tests, I never made any sketches, drawing or references, so the proportions might be off. Also, I haven’t done much with the eye-area, and ears aren’t done at all, but I’ve made space to attach them. Lastly, I don’t know if this is a male or female 
What I’m most interested in is comments about the looping though (the reason why I did this test), does it look okay? Areas to be improved? In the end, I want to get rid of all unnecessary edges while still adding more detail. As it is now, it consist of 684 polys. I want it to be much higher detail than it is now, but I don’t want to move on to that part until I’ve done more work on this base.
I’ve linked 3 images, one render, one screenshot subdivided but isolined display, and one screenshot without subdividing but marking the key edgeloops I’m using.
Render: http://cid-d2d028a2881ce540.skydrive.live.com/self.aspx/3D%20WIP/loopy6.jpg
Screen subidivided: http://cid-d2d028a2881ce540.skydrive.live.com/self.aspx/3D%20WIP/loopy7.jpg
Screen edgeloops: http://cid-d2d028a2881ce540.skydrive.live.com/self.aspx/3D%20WIP/loopy8.jpg